Check out example codes for "java get command line input". It will help you in understanding the concepts better.

Code Example 1

// Java program to demonstrate working of Scanner in Java 
import java.util.Scanner; 
class GetInputFromUser 
    public static void main(String args[]) 
        // Using Scanner for Getting Input from User 
        Scanner in = new Scanner(; 
        String s = in.nextLine(); 
        System.out.println("You entered string "+s); 
        int a = in.nextInt(); 
        System.out.println("You entered integer "+a); 
        float b = in.nextFloat(); 
        System.out.println("You entered float "+b); 

Learn ReactJs, React Native from